Home / 7,942.80-10,961.28-4,405.80

Finding the Fourth Proportional to 7,942.80, 10,961.28 and 4,405.80

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Solution

The fourth proportional to 7,942.80, 10,961.28 and 4,405.80 is: 6,080.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,942.80 : 10,961.28 = 4,405.80 : x
  2. Step 2: Convert to fraction form
    7,942.80/10,961.28 = 4,405.80/x
  3. Step 3: Cross multiply
    7,942.80x = 10,961.28 × 4,405.80
  4. Step 4: Simplify right side
    7,942.80x = 48,293,207.42
  5. Step 5: Solve for x
    x = 48,293,207.42/7,942.80
  6. Step 6: Final answer
    x = 6,080.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.